select * from feesentry_tb.
| 1 | 300 | 300 |
| 2 | 200.34 | 344.98 |
| 3 | 203.34 | 344.98 |
| 3 | 203.34333 | 344.93338 |
| 4 | 203.34333 | 344.93338 |
| NULL | NULL | NULL |
DELETE FROM feesentry_tb
WHERE (stud_rollno = 3)
after deleting two rows from table.
select * from feesentry_tb
| 1 | 300 | 300 | |
| 2 | 200.34 | 344.98 | |
| 4 | 203.34333 | 344.93338 |
UPDATE feesentry_tb SET Paidfee = 600 WHERE (remain_fee = 300)
| 1 | 600 | 300 |
| 2 | 200.34 | 344.98 |
| 4 | 203.34333 | 344.93338 |
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